Finished my subwoofer install this weekend. I used the speaker level inputs, and placed the unit behind the third row seats. I thought I could squeeze it somewhere like under a second row seat to save room, but then I wouldn't be able to slide the seats forward. I may try to move it later if I feel inclined to experiment.
Also reworked my i-Pod installation. I tapped into the front cigerette lighter, and mounted another outlet under the cupholders. I am using a Belkin Auto kit (a charger with a 3.5mm audio output) to connect to the Auxmod at the radio. Also I installed a Ground Loop noise filter to get rid of noise, and engine whine, while the charger is in use. I still have another 3.5mm input from py previous install, so I have a splitter at the Auxmod in order to give me a dedicated iPod connection, and an accessory input for portable DVD players or whatever.
The Kenwood doesn't take up a lot of space and REALLY adds strong bass. Everyone on Crutchfield was right. Works great, won't set off car alarms, but will thump HARD once adjusted right.
For a remote turn on lead, I tapped into the radios wiring harness. The wire I used is ORANGE WITH SILVER DOTS. I used some info on Mazda3forums.com to point me in the right direction, but all of our wiring has different colors.
P.S. Even WITH the third row seats removed, THE REAR SIDE PANELS ARE A #$^&^%#^% TO DEAL WITH!!! If removing these, GO CRAAAZY SLOW, like a clip at a time slow. The seatbelt lower mounts ALL go on the OUTSIDE of the panels, and don't lose the threaded plastic that the upper bolts screw into. I only have one now.
It was worth it.
